bradshaw



(N0 JI A. 4 Sheets-Sheet GARDING ENGINE.

No. 329,356. Patented Oct. 2'7, 1885.

WI'LIT EEEEE (N0 Model.) J 4 Sheets-Sheet 2.

OARDING ENGINE. V

Patented Oct. 27, 1885.

4 Sheets-Sheet 3.

(No Model.)

J. A, BRADSHAW.

GARDING ENGINE.

Patented 061;. 27, 1885- W It E 5 5 E 5 awa 4 q %M7M 4 N M o ode!) J A BRADSHAW. 4Sheets-Sheet 4.

GARDING ENGINE.

Patented Oct. 2 7, 1885.

N. PETERS. PhQm-lhho m her, Washmglcn. I) c.

UNIT D STATES Fries.

PATENT JOHN A. BRADSHAXV, OF LOWVELL, MASSACHUSETTS, ASSIGNOR TO DANIEL \VALKER, TRUSTEE, OF SAME PLACE.

CARDING-ENGINE.

SPECIFICATION forming part of Letters Patent No. 329,356, dated October 27, 1885.

Application filed Dcccmbcr'lB, 1884. Serial No.150,682. (No model.)

To all whom, it may concern.-

Be it known that I, JOHN A. BRADSHAW, a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Garding-Engines, of which the followingis a specification.

My invention relates to carding-engines; 1c and it consists in the devices and combinations hereinafter described and claimed, the object of such devices and combinations being to strip and doff the main cylinder.

In the accompanying drawings, on four sheets, Figure 1 is a right-side elevation of a cardingengine provided with my improvements, the cam secured to the main shaft,a part of the upper pawl-lever and its ratchet, and a part of the stripper-cam, stripper-lever, and its arch being shown by dotted lines, the carding-cylinder also being shown by dotted lines, and parts of the arch of the frame being broken away to show the eardingcylinder; Fig. 2, a 1eftside elevation of the same; Fig. 3, aside elevation of the stripper-cylinder, comb-shaft, and gearing, Fig. 4, a section of the stripper-cylinder 011 line :0 x in Fig. 8, the comb-shaft and con1b-carrier being in elevation; Fig. 5, a top view of a carding-engine 0 provided with my improvements, the arrow on the top indicating the direction in which the eardingcylinder rotates; Fig. 6, a dia gram, the large circle in full line indicating the cardingeylinder, the dotted circle around 5 it indicating the ends of the teeth of said cylinder, the small upper and lower circles indicating, respectively, the doffing-stripper and the lower stripper or stripper proper, to show the different depths to which the teeth of said 0 stripper enter the clothing of the carding-cylinder; Fig. 7,an elevation of the inner side of the lower ratchet, to show the shippingcam and the lifting-cam secured thereto; Fig. 8, a plan of the stripper-levers, the lower ratchet, 5 shipping-rod, clutch-lever, clutch-pulley for operating the lower stripper, said stripper, a part of the carding-cylinder, and frame being in section, and said stripper and carding-cylinder being turned ninety degrees downward and backward, to show how the teeth of said stripper enter the clothing of the main cylinder.

The frame A, arch A, feedrolls F F, the lower roll, F, provided with a gear, f, which takes into a pinion, f, secured to and revolv- 5 ing with the roll-driving pulley ffiwhich rolldriving pulleyf is driven by a band, f from a small pulley on the main cylinder-shaft O, the feed-rolls F F being geared together, the gear f on the lower roll, F, being connected through the intermediate gear,f to the gear f on the end of the fluted lap-feeding roll, the fast, P, and loose, P, pulleys on the cylinder-shaft G, the main cylinder 0, and the topflats T are all of the usual construction and operation, except as hereinafter specified. The cylinder-shaft O is provided with a cam or wiper, 0, between the frame A and the fast pulley P, which cam, when said shaft revolves, strikes once in every revolution upon the top of a pawl-lever, L, pivoted be low and in front of said main shaft to the side of said frame, the rear end of said pawl- ]ever having a pawl, Z, pivoted thereto and depending therefrom, which'pawl Z takes into a ratehet-wheel, R. The ratchet It turns on a stud, 1', projecting from the side of said frame, and has cast or otherwise secured thereon a cam, 0, similar to the cam 0 above named, which cam c, in each revolution of said ratchet R, strikes once upon the top of another pawl-lever, L, pivoted on the side of said frame in front of and below said stud r. The pawl-lever L has pivoted to it and depending from it a pawl, Z, which takes into 8 another ratchet, R, which is secured to a shaft, S, which extends through the machine from side to side and turns in the said frame. Each end of the shaft S is provided with a cam, 0 0. Outside of said frame, near the 0 front of the machine, is pivoted at p a lever, L U, which extends to the back of the machine, and is provided near its free end with an arch, Pl, from the crown of which depends a project-ion, Z Z, which once in every revolution of the shaft S is struck by the cam c c and lifted. Supported in hearings in said levers L L, and extending across the machine below the main cylinder 0, is the stripper proper, W.- This stripper W consists of an outer cylindrical shell, w, provided with four longitudinal slits, 20, extending nearly from end to end of the same. Between the slits the cylinder is strengthened by longitudinal ribs wfland also at the slits the shellwis thickened, or provided with ribs 10*, the adjacent faces of which are beveled toward the slits. To the ends of the shell to are secured hollow journals w, concentric with said shell, said journals being provided with circular heads w, which enter the ends of said shell and are secured therein by pins or screws 10*, driven through the shell into said heads. The journals of the shell extend only part way through the journal-boxes L secured on the levers L L. The comb-shaft o is square, except at its journals, and is provided (see Figs. 4 and 8) with four projecting arms, near each end of the square part of said shaft, and these arms are provided with circular openings 22. In these circular openings are held the rods 2)", which reach from end to end of the square part of the sh aft-,parallel therewith. The rods 2;" are provided with straight rows-of teeth or needles if, which project outward into or through the slits w, as explained below, the

- rods 12" and teeth o forming combs V. The slots o extending out from-the openings '0 are intended to allow the combs V to be inserted in and removed from the arms endwise Without removing the arms from the shaft or the teeth from the comb. The shaft 12 is notconcentric with the shell, but turns in separate bearings in the same pillowblocks, 13 B, and may be covered by a separate cap, 12 12, indicating the cap of the shell. The shell to is provided at one or both ends with an internally-toothed gcar,w", concentric with the axis of said shell, as shown in Figs. 3 and 8, and the shaft 12 is provided with a smaller externally-toothed gear, n concentric with the axis of said shaft, which gear 12 engages with the gear w, and which has the same number of teeth as said gear w. The faces of each tooth of each gear w o are preferably planes which meet each other at an angle of about twenty degrees, the teeth on the inner gear, 22 and the teeth of the outer gear, 10, being separated by spaces, as shown. It is evident that rotating the shaft 0 will rotate the shell, and that if said shaft have a uniform rotary motion the surfacespeed of the shell will also be uniform. It is apparent that the teeth o of each comb V, if of proper length, (the axis of the shaft being above that of the shell w, as shown,) will project above the shell when such comb is above the shaft o, and will be gradually drawn into the shell as the shaft is rotated, so that when such comb is directly below the shaft the teeth will be wholly within the surface of the shell.

I The shaft '0 has secured to it'a disk, ofiwhich and is provided with a similar stud, c", at an equal. distance from said shaft 1), the disk 0 and the pulley 12 forming the parts of a clutchpulley of common construction. The hubof the pulley v has an annular groove,with which the forked end at of the lever N engages. The lever N is pivoted at n to a bracket, Z", projecting from the lever Lflwhich is on the side 'of the machine opposite the ratchet R, and its rear end is pivoted to a shipping-rod, N, which reaches acrossthe machine and slides in bearing 1 in the lever L U. The ratchet R, above named, is provided on its inner face with a cam, a, or arcshaped projection with beveled ends,which cam r, as said ratchet R is rotated, pushes the rod N endwise and operates the lever to move the pulley r into an engagement with the disk v The rod N is restored to position by a spring, N, surrounding said rod, and compressed between the frame A and a pin, it", driven through said rod. The pulley '0 rotates at all times when the cardingcylinder is in motion, there being secured to the main shaft 0 a large gear, M,which takes into a pinion or small gear, M, the latter being concentrically secured to a band-pulley, M andturning with it on the'stud m,which projects from the side of the frame A, and the pulley M being connected by the band m to the clutch-pulleyr It will appear from Figs. 1 and 7 that the clutch is closed by the abovedescribed action of the cam r for some time before the levers L L are raised by the action of the cams c c. The object of'this is to let the stripper W attain its full speed before being applied to the surface of the cylinder 0. If the stripper \V were running slower than the main cylinder at the time of lifting the stripper into. contact with the cylinder, the teeth of the cylinder would be broken, and it is necessary that the stripper should revolve much more rapidly than the main cylinderthat is, with a greater surface speed-in order toclean the clothing of the cylinder, because the teeth of the cylinder are hooked inthe direction in which they move. The stripper so constructed and operated is at intervals, the frequency of which will depend on the number of teeth in ratchet R R, raised by the means above described high enough for the comb at the top of the cylinder to reach in between the teeth of the main cylinder and catch the cotton and draw it forward off from the teeth of said cylinder. As the stripper continues to revolve the teeth of the comb will be retracted into the shell of the stripper through the slots, which are too fine to admit the stripped by hand. I use a dofting-stripper, V, in all respects like the stripper WV, except that it is driven continuously while the carding-cylinder is in motion, its square shaft 10 having secured thereto a band-pulley, K, connected by the band K to another band pulley, K which turns on a stud, K, project ing from the side of the frame A, the lastnamed pulley, K having secured to it a pinion, K concentric therewith, which takes into the large gear M above described. The axes of tle central shaft and shell, 20 of the doffer-stripper, like those of the correspond ing parts in the lower stripper, are in the same plane with the axis of the carding-cylinder (J, the axis of the central shalt being nearer to the carding-cylinder than the axis of the shell, so that the greatest projection of any combs w" of the dofferstripper is when such combs nearest the cylinder and its teeth or needles w are in the same plane with the axis of the cylinder 0. The teeth of the doffer-stripper do not enter the teeth of the card-clothing on the cylinder to as great a depth as the teeth of the stripper, as the doffer-stripper is not intended to thoroughly strip the said cylinder, but only to take the place of the ordinary card-clothed doff'er in forming a sliver. The combs of the dofler-strippers are cleaned just as the combs of the stripper proper are cleaned that is, by the combs being drawn into the shell as the dofferstripper rotates. The dofferstripper is applied to the cylinder a little above the frame A proper, near the front of the main cylinder, portions of two or more top-flats being removed for that purpose. The fibers doffed from the cylinder are thrown forward onto the bonnet or top-flats T, just in front of the doffer, and are taken thence by the rolls U U, which rotate in the direction shown by the arrows and draw the doffings forward between them, and thus form a fleece, which, by the rotation of said rolls U U, is delivered in front of the rolls into a trumpet, w, substantially of the usual construction and operation, from which trumpet the fleece is drawn in the usual manner to form a sliver. The lower fleece-roll, U, is provided with a gear, a, which takes into a pinion, a, turning on a stud projecting from the side of the frame A. A bandpulley, u", is secured to and turns the pinion u, and is connected by a belt or band, a to a small pulley on the main shaft. The upper roll, U, is driven by frictional contact with the fleece between it and the lower roll, U, and turns loosely between the studs 10* or rollstand secured to the top-flats.

I claim as my invention 1. The combination, with the frame, card ing -cylinder, and main shaft of a cardingengine, and means of rotating said cylindershaft, of a cam secured to said shaft, a pawllever pivoted to said frame, adapted to be struck by said cam, and provided with a pawl, a ratchet pivoted to said frame and adapted to be engaged by said pawl and to be rotated thereby, the hub ofsaid ratchet being provided with a cam which rotates therewith, another pawl-lever secured to said frame and adapted to be struck by said last-named cam and pro vided with a pawl, another ratchet pivoted to said frame and adapted to be engaged by said last-named pawl and to be rotated thereby, a shaft to which said last-named ratchet is secured, said shaft extending through said frame from side to side thereof, and being provided with cams, stripper-levers pivoted on opposite sides of said frame and provided near their free ends with arches having downward projections adapted to be struck by the cams last named, and a stripper-cylinder arranged beneath and parallel with said carding-cylinder and having its journal-bearings on the levers last named, whereby said stripper-cylinder is automatically brought at intervals into contact with said carding-cylinder, as and for the purpose specified.

2. In combination with the stripper-levers and stripper-cylinder,and means,substantially as described, of raising said levers, one of the said levers being provided with a bracket, the clutch-disk secured to the shaft of said stripper-cylinder and provided with a stud paral lel to said shaft, the clutch-pulley provided with a stud at an equal distance from said shaft with the stud in said disk, said clutchpulley turning loosely and sliding freely on said shaft and having a hub provided with an annular groove, a lever pivoted to said bracket and having at one end a fork to engage with the groove in said hub, 'a rod pivoted to the end of said last-named lever and sliding in said shipping-levers, a ratchet provided with a cam adapted to strike the free end of said rod and to move said rod longi tudinally, and means, substantially as described, of rotating said ratchet, as and for the purpose specified.

JOHN A. BRADSHAW.

Witnesses:

ALBERT M. Moonn, GERTRUDE M.- DAY. 

